body {
	font-family: Arial, Helvetica, sans-serif;
	text-align: center;
	background: url("i/mario-bg.jpg");
	background-size: cover;
}

#board {
	width: 540px;
	height: 540px;
	background: url("i/soil.png");
	background-size: cover;
	border: 3px solid white;
	border-radius: 25px;
	margin: 0 auto;
	display: flex;
	flex-wrap: wrap;
}

#board div {
	width: 180px;
	height: 180px;
	background: url("i/pipe.png");
	background-size: cover;
}

#board div img {
	width: 100px;
	height: 100px;

	user-select: none;
  -moz-user-select: none;
  -webkit-user-drag: none;
  -webkit-user-select: none;
  -ms-user-select: none;
}